A Malaysian military contractor at the center of one of the Navy's worst corruption cases pleaded guilty to bribery and conspiracy charges in federal court Thursday — only hours after a Navy captain admitted to providing him classified information in exchange for lavish hotel rooms and prostitution services.

Leonard Glenn Francis, the chief executive of a Singapore company that has serviced Navy vessels at Asian ports for 25 years, held his hands behind his back and twiddled his fingers as he told the judge he was changing his plea to guilty.

Nicknamed "Fat Leonard," Francis and his firm obtained classified information that allowed his company to overbill the U.S. military by at least $20 million, according to the plea agreement. Prosecutors say he provided lavish hotel rooms, prostitutes and plane tickets to Navy officials who cooperated.

Francis' attorneys could not immediately be reached for comment after the hearing.

He faces up to 25 years in prison. He and his firm also must forfeit $35 million, according to the plea agreement.

The plea was entered hours after Capt. Daniel Dusek became the second Navy officer to enter a guilty plea. Dusek made his first appearance in federal court in San Diego and waived his right to present his case before a federal grand jury.

A total of four active-duty Navy personnel have been charged.